Instrument stand



FIG. 1 is a front view of an instrument stand with the new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a front perspective view thereof.

In the drawings, the broken lines represent portions of the instrument stand that form no part of the claimed design. 

CLAIM The ornamental design for an instrument stand, as shown and described. 